Mine car



2 Sheets-Sheei 1 f6: H---l @et 6, 1936. G. E. EDMUNDs MINE CAR Original Filed Aug. 30, 1934 Oct. 6, 1936. G. E EDMUNDS 2,056,654

MINE CAR Original vFilecl Aug. 30, 1934 2 Sheets-Sheet 2 VIII/Ill'4 u U. A

Patented Oct. 6, 1936 UNETED STATES PATENT OFFICE MINE CAR a corporation of Ohio Application August 30,

1934, Serial No. 742,177

Renewed August 6, 1936 20 Claims.

The present invention relates to improvements in mine cars of the stub axle type and wheel mountings therefor and has as its general object Eo produce a strong and long wearing construc- In the accompanying drawings I have shown illustrative embodiments of the invention and in the drawings,

Figure 1 is a partial side elevation of a mine car s embodying the invention,

Figure 2 is a plan of what is shown in Figure 1 partly in section on line 2 2,

Figure 3 is a section substantially on line 3 3 of Figure l,

Figure l shows in perspective an outer pedestal and stirrup member which appears also in Figures 1 to 3,

Figure 5 is a perspective of an inner pedestal member,

Figure 6 is a side elevation of the central portion of a mine car embodying the invention in different form,

Figure '7 is a section substantially on line 'I-l of Figure 6,

Figure 8 is a perspective of a pedestal appearing in Figures 6 and 7, and

Figure 9 is a sectional View similar to Figure '7 showing a modification.

To refer to the drawings, and particularly to Figures l to 5, reference numeral I5 designates one of a pair of main or center sills which extends from end to end of the car and ordinarily has draft means secured thereto in the well known manner. Preferably, as is here shown, the main sills are constituted by Z-bars which may be ntegral or built up, the bars being disposed with the main web in vertical planes, with the lower horizontal ilanges extending inwardly and with the upper horizontal flanges extending outwardly. The lower flanges support the depressed central floor plate I6 whose lateral margins are riveted thereto. A flare plate or side lading wing I'I has its inner marginal portion resting upon and secured to the top flange of the main sill and is provided with a pair of wheel openings. An angle bar I8 secured to the outer marginal portion of the Wing Il has secured thereto the side wall I9. The angle bar I3 extends from end to end of the car and constitutes an outer or auxiliary sill member. It will be understood that this construction is duplicated at the other side of the car.

A bulb flanged angle bar 2U extends parallel to main sill l5 beneath plate I'I and has a horizontal ange riveted to the latter, the major ange of the bar lying inavertical plane. The baris spaced somewhat outwardly from the wheel openings as particularly shown in Figure 3. and at each wheel opening is provided with an aperture as at 2| in its vertical ange. Opposite each aperture 2| an inner pedestal or box 22 is secured against the outer face of the main sill. Each inner pedestal comprises the vertical web portion 23 through which it is riveted to the vertical web of the main sill, and top horizontal wall portions 24 which are riveted to the top horizontal flange of the main sills, these rivets also securing the inner marginal portion of the adjacent wheel hood 25, Figure 3. Between the top wall portions 24 is a somewhat depressed horizontal wall portion 26 joined at its ends by depending wall portions 2'I ,-15 and 28, the latter in turn being joined at their lower ends by the horizontal wall portion 29. The

wall portions 26 to 29 dene a substantially rectangular opening whose vertical dimension is somewhat greater than its horizontal dimension.

Opposite each of the inner pedestals 22 is disposed an outer pedestal or box 30. 'The outer pedestal comprises a vertical web 3l which is riveted to the outer face of the vertical flange of bar 20 and is beveled off at its lower edge to clear the bulb flange. Centrally, the pedestal has an opening dened by the top wall 32, the side walls 33 and 34 and the bottom wall 35, the opening being of the same size as the opening in the inner pedestal and aligned With the latter and with an aperture 2| of the bar 20. The pedestal 30 has a top horizontal flange 36 underlying the top flange of the bar 20 and riveted thereto, the rivets also securing the outer edge of the adjacent Wheel hood 25. These same rivets serve to secure the bar 2l) to the wing I'I. lII'he web 36 is continued outwardly into a stirrup 31 which is upwardly stepped so that its top horizontal surface lies in the same plane as the top of the horizontal ange of bar 20 and is thus against the bottom of wing I1. Stirrup 3'I is riveted through the wing I'I to the angle I8 and provides supporting means for the outer portion of the wing. The structure is rigidied by the integral vertical end webs or gussets 38 and 39.

A substantially square block 4i) is disposed in the opening in each pedestal, Walls 26 and 32 of the inner and outer pedestals provide top seating surfaces for the tops of the blocks while the side walls 2'I, 28 and 33 and 34 present lateral p guide surfaces for the blocks so that the latter are held against rotation, some vertical play being permitted. Walls 29 and 35 constitute bottom retaining means. The blocks have greater carrying area at the top than the ordinary round bushings and the vertical sides absorb the impact stresses from the wheels much better. The blocks slide easily up and down throughout their allowed clearance and wear much longer than the usual round bushings.

Each block, as here shown, has a hexagonal aperture in which is received an end of a stub axle 4l which is of hexagonal shape to mate with the block apertures. A sleeve 42 on each axle carries a wheel 43 through the intermediary of anti-friction bearings. Each sleeve 42 has a mating hexagonal opening which receives its axle, a xed collar 44 at its inner end, and an adjustable collar 45 at its outer end. To provide clearance for the inner end of the wheel hub, webs 24 (Figure 5) are adequately spaced apart, it being noted that these webs have outwardly projecting po-rtions. Walls 26 to 29 terminate outwardly in a common vertical plane providing thrust surfaces for the collar 44. The axles extend freely through the apertures 2l and the margins of the latter provide thrust surfaces for the outer ends of collars 42. In order to retain the axle and outer block in place, walls 33 and 34 of each outer pedestal have outwardly projecting ears pierced to receive a pin 46.

The bar 28 need be only of suiiicient length to fully accommodate the outer pedestals and it is so shown in Figure 1. Intermediate the wheels, the bar 20 has secured thereto the upturned ends of straps 4l which extend beneath the main sills and center flooring' and are secured thereto, the opposite ends of the straps being similarly secured to the opposite bar 2D. 'Ihe strap portions between the auxiliary and main sills may be utilized for the purpose of carrying brake shoe supporting means of the type shown in my pri-or Patents 1,915,784 and 1,916,785 issued July 4, 1933. The straps will suiiice for this purpose if they extend inwardly only sufficiently to be secured to the main sills. Bars 20 serve as auxiliary longitudinal sill members,

Aand unite with the other structural provisions to provide a car structure of great rigidity and strength. If desired, each bar 28 and its associated outer pedestals with their stirrup portions may be cast as an integral unit.

Since the non-round axle ends are received in mating openings in the blocks, and since the blocks are non-rotatable, the sleeves 42 are held against rotation, Their position may be changed when desired by simply remo-ving the outer blocks, withdrawing the axles from the inner blocks, rotating the axles as desired, and replacing.

In Figures 6 to 8, a narrower type of car body is shown. The car comprises the main sills as at 48 arranged as heretofore discussed and the depressed center floor plate 49 and flare plate 58 are also similarly arranged, the flare plate however, extending outwardly a shorter distance than the plate Il of Figures 1 to 3. The outer marginal portions of the ilare plates have the auxiliary sill angles as at 5l secured thereto, side walls as at 52 also being secured to the angles. The wheel hoods as at 53 have at their outer sides vertical ilanges secured to the side walls. The inner and outer pedestals are of identical construction and are particularly shown at 54, Figure 8.

Each pedestal has the top wall portions 55 and 56 and the depending leg portions 5l and 58 preferably joined with the top wall portions by the integral outer gussets 59. The inner faces of the legs are parallel and are connected upwardly by a portion which presents an angular seating surface 60. The overhanging lateral margins of web portions 55 and 56 are recessed at 55 and 56 to provide surfaces in the same vertical plane with the lateral surfaces of the legs so that upper clearance for the wheel hub is provided.

At each wheel opening, a pedestal 54 is riveted to the top horizontal ange of the main sill and another pedestal is riveted to the horizontal flange of bar 5l through the flare plate margin. A stub axle 6l has at one end an integral hexagonal block 62 which is received by the inner pedestal. At the other end the axle has a reduced threaded portion 63 upon which is threaded a hexagonal block 64 of the same size as block 62. The axle portion between blocks is machined and has tted Collars 65 and 66 slipped thereon which are held in position by the blocks and in turn position the anti-friction bearings, mounted directly on the axle, on which wheel 61 is mounted. Beneath the blo-cks, the legs 5'! and 58 have aligned apertures which receive bottom retaining means such as bolts 68. The 4axle is held against outward displacement through engagement of block 62 with collar 65, and engagement of collar 66 with pedestal 54.

Parallel sides of the blocks are guided between the vertical surfaces of the legs and angular portions thereof flt against the angular top seating surfaces 68. As in the first embodiment, the blocks are thus held against rotation while vertical movement throughout the allowed clearance is permitted. Since the axle 6| is integral with the block 62 it cannot turn, and since block 64 cannot turn, the parts are securely maintained in position. However, if it is desired to take up wear in the bearings, the wheel may be dropped upon removal of the pins 68, the block 64 rotated one-sixth of a turn or more relative to the axle, and the parts replaced. In securing the pedestals to the respective sills, the recesses 55 and 56' are faced toward the wheel so that hub clearance is provided.

It will be seen that in the construction just described, the additional auxiliary sills as at 20, Figures 1 to 3, are dispensed with since due to the relatively narrow width of the car, the outer pedestals may be secured directly to the outer sills. Square blocks could be used in this embodiment, as in the rst, but in such case no adjustment less than a quarter turn could be secured. I prefer, therefore, to use the hexagonal blocks as making ner adjustment possible. The term polygonal as used in the claims covers a square as well as a hexagonal figure.

In Figure 9, I have shown a slight modication of the general arrangement shown in Figures 6 to 8. In this construction, the reduced end 69 of the axle is not externally threaded but is merely turned round to be received in a round opening in the externally hexagonal block 10. The reduced end 69 is provided with a threaded axial bore in which is threaded the shank of a cap screw 1|, a washer l2 being interposed between the head of the screw and block lll. The relation of parts is such that upon initial adjustment of screw Il to properly seat the bearings, a space remains between washer l2 and the end of the axle so that by turning in the screw subsequent adjustment may be made for wear. In order to hold the screw in fixed position, I provide a locking plate 13 which is interposed between the polygonal head of the screw and washer 12. The plate has a finger 'i4 projecting into a small recess in bushing 'I8 and has wings as at 15 which may be turned up into engagement with faces of the head 1l. When adjustment is required, wings 15 are merely turned downto release the head and returned to locking position when adjustment has been effected. It will be seen that in the arrangement just described it is not necessary to drop the wheel to eiect adjustment as in the construction shown in Figure 7.

Variations in details and arrangement are, of course, possible from what has been described and the embodiments herein disclosed are to be taken as merely illustrative of the invention as defined in the following claims.

I claim:

1. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top seating surface for an axle block, axle blocks associated with the pedestals and each having parallel vertical surfaces for cooperation with the guide surfaces of its associated pedestal whereby the blocks are held against rotation, the blocks being vertically movable relative to said guide surfaces, the car weight being transmitted to the blocks through said topi4 seating surfaces, and wheeled stub axle portions extending between the blocks at each wheel opening.

2. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly 0f the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having openings with parallel vertical side walls, blocks of polygonal form in said openings, said blocks having parallel sides for contact with the vertical side walls of the openings whereby rotation of the blocks in said openings is prevented, the blocks being vertically movable relative to said guide surfaces, said openings providing top seating surfaces andbottom retaining means, the car weight being transmitted to the blocks through said top seating surfaces, and wheeled stub axle portions extending between the blocks at each wheel opening.

3. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having openings with parallel vertical side walls, blocks of polygonal form in said openings, said blocks having parallel sides for contact with the vertical side walls of the openings whereby rotation of the blocks in said openings is prevented, the blocks being vertically movable relative to said side walls, said openings providing top seating surfaces and bottom retaining means, the car weight being transmitted to the blocks through said top seating surfaces, wheeled stub axle portions extending between the blocks at each wheel opening, the inner blocks being integral with the axle portions and the outer blocks being adjustable on the axle portions toward the inner blocks, and means for holding said outer blocks in adjusted position, said .bottom retaining means being removable.

ll. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having openings with parallel vertical side walls, blocks of polygonal form in said openings, said blocks having parallel sides for contact with the vertical side walls of the openings whereby rotation of the blocks in said openings is prevented, the blocks being vertically movable relative to said side walls, said openings providing top seating surfaces and bottom retaining means, the car weight being transmitted to the blocks thro-ugh said top seating surfaces, and wheeled stub axle portions extending between the blocks at each wheel opening, the inner blocks being integral with the axle portions and the outer blocks being threaded on the latter, said bottom retaining means being removable.

5. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having openings with parallel vertical side walls, blocks of polygonal form in said openings, said blocks having parallel sides for contact with the vertical side walls of the openings whereby rotation of the blocks in sai-d openings is prevented, the blocks being vertically movable relative to said side walls, said openings providing top seating surfaces and bottom retaining means, the car weight being transmitted to the blocks through said top seating surfaces, and wheeled stub axle portions ext-ending between the blocks at each wheel opening, the inner blocks being integral with the axle portions and the outer blocks being slidable on the latter, headed screws threaded in the outer ends of the axle portions, washers interposed between the screw heads and the outer blocks, and locking means for said screws, said bottom retainu ing means being removable.

6. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top horizontal seating surface for an axle block, square axle blocks associated withv the pedestals and each arranged with sides between the guide surfaces of its associated pedestal and top against the seating surface thereof whereby to be held against rotation, the blocks being vertically movable relative to said side walls, the car weight being transmitted to the blocks through said top seating surfaces, and the wheeled stub axle portions extending between the blocks at each wheel opening.

'7. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardlyV of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, the outer pedestals being inwardly of the outer edges of said lading wings and having stirrup portions extending to points at least near said outer edges for the support of said wings, said auxiliary sills having depending flanges and the outer pedestals being secured against the outer faces of said flanges.

8. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, said auxiliary sill members being constituted by angle bars disposed beneath said lading wings, said bars having horizontal flanges secured to said wings and vertical flanges inwardly of the outer pedestals and apertured to pass the axles.

9. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, said auxiliary sill members being constituted by angle bars disposed beneath said lading wings, said bars having horizontal flanges secured to said wings and vertical flanges inwardly of the outer pedestals and apertured to pass the axles, said auxiliary sills being inwardly of the outer edges of said lading wings and their horizontal flanges being outwardly directed with the outer pedestals secured therebeneath, said outer pedestals having stirrup portions extending to points at least near said outer edges, said stirrup portions having wing supporting surfaces in the top plane of said horizontal flanges.

l0. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, the auxiliary sills being positioned above the outer marginal portions of said lading wings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top seating surface for an axle block, axle blocks associated with the pedestals and each having parallel vertical surfaces for cooperation with the guide surfaces of its associated pedestals whereby the blocks are held against rotation, the blocks being vertically movable relative to said guide surfaces, the car weight being transmitted to the blocks through said top seating surfaces, and wheeled stub axle portions extending between the blocks at each wheel opening.

11. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, all of said sills having vertical webs, lading wings secured to the tops of the respective main and auxiliary sills and each provided with a pair of wheel openings, a central floor extending between the bottom portions of the main sills and supported by the latter, the auxiliary sills being confined in length to the medial portion of the car and the main sills extending the f-ull length of the car, inner and outer axle pedestals secured to the main and auxiliary sills respectively and below the plane of the lading wings, wheeled stub axles engaged with the pedestals at each opening, and strapsextending between the wheels with ends secured to said auxiliary sills, the auxiliary sills being spaced inwardly of the outer edges of the lading wings and the outer axle pedestals having outwardly extending stirrup portions for supporting the outer portions of the lading wings,

12. In mine car construction, a pair of pedestals each having Vertical parallel guide surfaces, a stub axle having at one end an integral block with parallel surfaces for contact with the guide surfaces of one of said pedestals whereby to be held against rotation, a block on the other end of said axle adjustable longitudinally of the latter and having parallel surfaces for contact with the parallel surfaces of the other pedestal whereby to be held against rotation, said blocks being vertically movable relative to said guide surfaces, means for holding the last mentioned block toV the axle against movement away from the first mentioned block, collars on said axle, anti-friction bearings on the axle between said collars, and a wheel mounted on said bearings, the collar adjacent the adjustable block being movable to follow the adjustments of the latter.

13. In mine car construction, a pair of pedestals each having vertical parallel guide surfaces, a stub axle having at one end an integral block with parallel surfaces for contact with the guide surfaces of one of said pedestals whereby to be held against rotation, the other end of said axle being threaded, a block threaded on said other end of said axle and having parallel surfaces for contact with the parallel surfaces of the other pedestal whereby to beheld against rotation, said blocks being vertically movable relative to said guide surfaces, collars on said axle, anti-friction bearings on the axle between said collars, and a wheel mounted on said bearings, the collar adjacent the threaded block being movable to follow the adjustments of the latter.

14. In mine car construction, a pair of pedestals each having 'vertical parallel guide surfaces, a stub axle having at one end an integral block with parallel surfaces for Contact with the guide surfaces of one of said pedestals whereby to be held against rotation, a block on the other end of said axle adjustable longitudinally of the latter and having parallel surfaces for contact with the parallel surfaces of the other pedestal whereby to be held against rotation, said blocks being vertically movable relative to said guide surfaces, a headed screw threaded in the end of the axle remote from said integral block, a washer interposed between the screw head and the adjustable block, locking means for said screw, collars on said axle, anti-friction bearings on the axle between said collars, and a wheel mounted on said bearings, the collar adjacent the adjustable block being movable to follow the adjustments of the latter.

15. A stub axle mine car comprising a pair of `main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top seating surface for an axle block, axle blocks associated with the pedestals and each having parallel vertical surfaces for cooperation with the guide surfaces of its associated pedestals whereby the blocks are held against rotation, said blocks being vertically movable relative to said guide surfaces, the car weight being transmitted to the blocks through said top seating surfaces, said blocks having polygonal openings, a polygonal stub axle having its ends received in said openings, a sleeve having a polygonal opening through which said axle extends, a wheel, and anti-friction bearings between said sleeve and wheel.

16. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each Wheel opening and below the plane of the lading wings, the outer pedestals being inwardly of the outer edges of said lading wings and having stirrup portions extending to points at least near said outer edges for the support of said wings, said auxiliary sills having depending flanges and the outer pedestals being secured against the outer faces of said flanges, stub axles engaged in said pedestals and wheels on said axles, said flanges constituting abutments for outward wheel thrusts.

17. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, said auxiliary sill members being constituted by angle bars disposed beneath said lading wings, said bars having horizontal flanges secured to said wings and vertical flanges inwardly of the outer pedestals and apertured to pass the axles, stub axles engaged in said pedestals, and wheels on said axles, the inner marginal surfaces of the apertures in the vertical flanges constituting abutments for outward wheel thrusts.

18. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top seating surface for an axle block, axle blocks associated with the pedestals and each having parallel vertical surfaces for co-operation with the guide surfaces of its associated pedestals whereby the blocks are held against rotation, the blocks being vertically movable relative to said guide surfaces, the car weight being transmitted to the blocks through said top seating surface-s, and wheeled stub axle portions extending between the blocks at each wheel opening, said auxiliary sills having depending flanges and the outer pedestals being secured against the outer faces of said flanges.

19. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secure-d to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and below the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top seating surface for an axle block, axle blocks associated with the pedestals and each having parallel vertical surfaces for co-operation with the guide surfaces of its associated pedestals whereby the blocks are held against rotation, the blocks being vertically movable relative to said guide surfaces, the car weight being transmitted to the blocks through said top seating surfaces, and wheeled stub axle portions extending between the blocks at each wheel opening, said auxiliary sills having depending flanges and the outer pedestals being secured against the outer faces of said flanges, outward rear wheel thrusts being taken by said flanges.

20. A stub axle mine car comprising a pair of main sills and auxiliary sills outwardly of the main sills, lading wings secured to the respective main and auxiliary sills and each provided with a pair of wheel openings, inner and outer axle pedestals secured to the main and auxiliary sills respectively at each wheel opening and be- .low the plane of the lading wings, each of said pedestals having parallel vertical guide surfaces and a top seating surface for an axle block, axle blocks associated with the pedestals and each having parallel vertical surfaces for cooperation with the guide surfaces or its associated pedestal whereby the blocks are held against rotation, the blocks being vertically movable relative to said guide surfaces, the car weight being transmitted to the blocks through said top seating surfaces, and wheeled stub axle portions extending between the blocks at each wheel opening, said auxiliary sills having depending flanges provided with apertures through which the stub axle portions extend, the inner marginal surfaces of said apertures constituting abutments for outward wheel thrusts.

GLENN E. EDMUNDS. 

